Calculator apps are dime a dozen on the Windows Store. Maybe even less, but hey, who’s counting? But those who do regularly count and calculate on the Windows 8 devices will be delighted with this app.

Sometimes things turn out best when kept simple. And in this case, they turned out absolutely great. Calculator X8 offers a simple yet touch-optimized calculating app using a Modern UI. Two modes are included — Basic and Scientific — which can be switched by rotating the screen.

The official description sheds light on some details:

“The most beautiful and feature rich calculator available for Windows 8. Switch between 3 different themes and use the calculator in scientific or normal mode.

Open Settings in the Charms bar to change the theme of the app. Rotate the app or snap it to switch between scientific and basic calculator and switch between radian and degree calculations using the Rad / Deg button.”

While the developer has promised more themes in the future, the ones included are a sight to behold. Metro, Windows 7 and the classic look of Windows 95 are a sight to behold — familiar and instantly recognizable. And in many ways showcases the evolution of Windows design philosophy itself.

The free app supports all three processors (x86, x64, and ARM) and the latest update fixes a few bugs.